1 files changed, 39 insertions, 2 deletions
diff --git a/src/include/taler_templating_lib.h b/src/include/taler_templating_lib.h
index 9cce84f5a..6af6db715 100644
--- a/src/include/taler_templating_lib.h
+++ b/src/include/taler_templating_lib.h
@@ -22,6 +22,23 @@
 #define TALER_TEMPLATING_LIB_H
 
 #include <microhttpd.h>
+#include "taler_mhd_lib.h"
+
+/**
+ * Fill in Mustach template @a tmpl using the data from @a root
+ * and return the result in @a result.
+ *
+ * @param tmpl 0-terminated string with Mustach template
+ * @param root JSON data to fill into the template
+ * @param[out] result where to write the result
+ * @param[out] result_size where to write the length of the result
+ * @return 0 on success, otherwise Mustach-specific error code
+ */
+int
+TALER_TEMPLATING_fill (const char *tmpl,
+                       const json_t *root,
+                       void **result,
+                       size_t *result_size);
 
 
 /**
@@ -48,7 +65,7 @@ TALER_TEMPLATING_build (struct MHD_Connection *connection,
                         const char *template,
                         const char *instance_id,
                         const char *taler_uri,
-                        json_t *root,
+                        const json_t *root,
                         struct MHD_Response **reply);
 
 
@@ -72,7 +89,27 @@ TALER_TEMPLATING_reply (struct MHD_Connection *connection,
                         const char *template,
                         const char *instance_id,
                         const char *taler_uri,
-                        json_t *root);
+                        const json_t *root);
+
+
+/**
+ * Load a @a template and substitute an error message based on @a ec and @a
+ * detail, returning the result to the @a connection with the given @a
+ * http_status code.
+ *
+ * @param connection the connection we act upon
+ * @param template_basename basename of the template to load
+ * @param http_status code to use on success
+ * @param ec error code to return
+ * @param detail optional text to add to the template
+ * @return #MHD_YES on success, #MHD_NO to just close the connection
+ */
+MHD_RESULT
+TALER_TEMPLATING_reply_error (struct MHD_Connection *connection,
+                              const char *template_basename,
+                              unsigned int http_status,
+                              enum TALER_ErrorCode ec,
+                              const char *detail);
 
 /**
  * Preload templates.